Ignition system



A. L. MOELLER.

IGNITION SYSTEM.

APPLICATION FILED JUNE 8,1915.

Patented Aug. 15, 1916.

Gummy UNITED STATES PATENT QFFTCE.

ALBERT L. MOELLER, OF MISHICOTI', WISCONSIN.

IGNITION SYSTEM.

Application filed June 8, 1915.

To all whom it may concern:

Be it known that I, ALBERT L. MonLLnR, a citizen of the United States, residing at hlishicott. in the county of Manitowoc and State of \Visconsin, have invented certain new and useful ln'iprovements in Ignition Systems, of which the following is a speci lica ti on.

The present invention appertains to improvements in ignition systems for internal combustion engines, and has for its object the provision of a novel form of timer and distributor, by means of which a fat, or intense spark is produced at the spark plug or plugs of the motor, with attendant ad-' vantages well known to those skilled in the art to which the invention refers.

Vith the above and other objects in view, this invention consists in the construction, combination and arrangement of parts all as hereinafter fully described, claimed and illustrated in the accompanying drawings, wherein:

Figure 1 is a diagrammatic view showing an ignition system embodying the elements of my invention. Fig. 2 is a longitudinal sectional view through a timer and distributer forming the essential features of this apparatus. Fig. 8 is a vertical sectional view taken about on the line 3-3 of Fig. 2.

Throughout the following detail description, and on the several figures of the drawings, similar parts are referred to by like reference characters.

Referring to the drawing and describing my special type of timer and distributor, the numeral 1 designates the outer extremity of an engine cam shaft with which devices of 'this character are usually connected for the purpose of properly timing the distribution of electric current to the spark plugs in proper relation to the operation of the motor pistons. The outer extremity of the shaft 1 tapers and is square in cross section, upon which tapered portion is mounted a supporting member or disk 2, said disk being insulated at 3 from the cam shaft 1 and held on said shaft by means of the lock nut 1 connected to the latter. The nut 1 is also insulated from the disk 2 as will be observed in Fig. 2 of the drawing. The supporting member or disk 2 is provided with an annular groove 5 in which is mounted the commutator arm 6 pivoted on the pin 7 extending transversely of the Patented Au 15, 1916.

Serial No. 32,879.

groove 5. The contact making arm has connected thereto a. spring 8 by means of which the roller brush 9 mounted in the free extremity of said arm is normally held in position for contacting with certain circuit closing contacts hereinafter mentioned. The disk or support 2 just described is mounted within the timer casing 10, said casing being somew iat conical in shape and provided with a pull rod connection 11 as is customary. The casing 10 carries a pinrality of circuit closing contacts 12, the number, of course, depending upon the number of cylinders with which the engine or motor is provided, the number illustrated in the drawing, however, being four. The casing 10 is primarily held in proper relation to the cam shaft by the closure or cover plate 13.

Extending laterally from the face of the disk 2 is a projecting bracket or arm 1& attached to said disk by fastening members 15 at one end and passingthrough the casing adjacent to its opposite end. The opening of the casing through which the extension 14: passes contains a brass nipple or bushing 16 which is insulated from the casing as indicated at 17. The bushing 16 constitutes a bearing for the extension 14: which is slightly reduced in size at the point where it passes through this member. Loosely mounted adjacent to the outer extremity of the extension 141: is a brass or other suitable connecting member 18 to which the return circuit wire 19 is connected. The meml er 18 is held upon the extension by means of the lock nut 20 and is, furthermore, suitably washered from the end at one side and from the bushing 16 at its other side, as clearly shown in Fig. 2 of the drawing. The circuit closing contacts 12 may be said to be of conventional form in that they include binding posts '21 for the wire conductors from the induction device as will now be described.

Referring to Fig. 1 of the drawing, A designates a generator or magneto of a conventional type which is connected to the primary terminal post 22 of an induction device B, also of conventional. form. From a negative pole 23 of the primary winding of a coil unit, a wire 24 extends to a binding post 21 of the commutator hereinbefore described. At the proper time during the revolution of the disk 2 and its eouta ct male O ding" ir member or brush 6, the primary current is led from the circuit closing contact 12 of said binding post through the extension 14: to the connecting member 18 on said extension and from thence through the return circuit wire 25. back to the generator A. It will be noted that a switch G is interposed in the circuit just described and, of course, is designed to be thrown on to the magneto side during the distrilmting function hereinbefore meirioned.

The secondary winding for the induction coil above mentioned has connected thereto the circuit wire 12(3 wnich extends to a binding post of spark plu l) for one of the cylinders cf the motor. The wire 27 leads from the second binding post of this spark plug' back to the binding: post 21 of the di:-:trib uter l adinc' the secinnlary current back to the primary circuit through the primary circuit wire it. The circuit has thus been described widi reference to a single spark plug, ind it will be apparent by reference to Fig.

that the same circuit conditions exist for i other plans as the timer and distribnter pparatus performs its distributing function. the o er circuits not being specific; lly mentioned in this description for the reason that tl ey will be readily understood by the amatic showing. The battery E may, of course, be utilized as the current generator instead of the magneto A, said battery being connected to the primary winding of the induction apparatus B by the wire l: have found by actual experience that the wrangements hereiubefore described provide a very intense spar at the spark plug and a l'iords a stronger comlmstion of the combustible fuel as is readily appreciated by those familiar with apparatus of this cha acter.

thus described my invention, what claim as new is:

l. The combination with a rotative elecontact carried by said asiuc, extension means conne "ted to the supporting member and projecting from the using, to form a bearing therefor and a circuit terminal loosely carried by the exterior projection of said extension means.

2. The combination with a rotatiye element, of a commutator comprising a moy able easing having a bearing at one side on said rotati e element, a supporting member in the casing fixed to the rotatiye element for rotation therewith, a plurality of circuit closing contacts carried by said casing, a contact making element carried by the ro tatablc support, a circuit terminal arranged exterior to the using in axial alinement with the rotati e element, and means on which said terminal is journaled and operativcly connecting' the terminal with the rotatable support aforesaid whereby said terminal is common to all of said circuit clos ing contacts.

Jr The combination with a rotatiye element, of a commutator comprising a movable casing, a supporting member in the casinofixed to the rotatire element for rotation therewith, a plurality of circuit clocing contacts carried by said casing, a con act making element. carried by the rotatable support, a circuit terminal arranged exterior to the casing and relati eiy stationary with respect thereto, in arns operatively connecting the terminal, with the rotatable support aforesaid whereby said terminal is common to all of said circuit closing contacts. and a bearing member for the casing on said lastanentioned means and insulating said means from the asing.

l. The combination with a rotatiye element, of a connnutator comprising a casing having an opening therein, a supporting disk carried by said rotative element for rotation therewith, means locking said disk on said rotati e element, a commutator arm pivot-ally carried by the disk, circuit closing contacts arranged in the casing and. with which the con'nnutator arm coacts. an extension bracket projecting laterally from the disk and extending through the opening aforesaid to a point exterior of the 'ilSillQ a journal member in the opening for said extension. a circuit terminal member loosely mounted upon the exterior portion of the extension, and means insulating the disk and extension from the rotatire element.

In testimony whereof I allix my signature.

ALBERT L. MUELLER.

opics of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

